Home / 30,345.20-45,520.52-8,158.08

Finding the Fourth Proportional to 30,345.20, 45,520.52 and 8,158.08

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Solution

The fourth proportional to 30,345.20, 45,520.52 and 8,158.08 is: 12,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.20 : 45,520.52 = 8,158.08 : x
  2. Step 2: Convert to fraction form
    30,345.20/45,520.52 = 8,158.08/x
  3. Step 3: Cross multiply
    30,345.20x = 45,520.52 × 8,158.08
  4. Step 4: Simplify right side
    30,345.20x = 371,360,173.71
  5. Step 5: Solve for x
    x = 371,360,173.71/30,345.20
  6. Step 6: Final answer
    x = 12,237.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.